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Air Tractor AT-504、AT-402机型小巧,构造简单,拆装和维护简便,具有载药量大、防治作业效率高、喷洒质量好、防治效果好的优势。其载药量分别达1.8 t和1.5 t,单架次喷洒面积分别达1 000 hm2和667 hm2,每个有效工作日最大防治面积可达8 000 hm2和5 333.6 hm2。AT-504和AT-402B型飞机平均雾滴密度为15~25个/cm2;均匀度为0.75~0.80,雾滴直径中值176μm;喷洒覆盖率达96%,防治效果达95%~99%。运用AT-504、AT-402在山东省大面积防治美国白蛾,经济效益、生态效益和社会效益显著。
Air Tractor AT-504, AT-402 Compact, simple structure, disassembly and easy maintenance, with a large drug loading, prevention and control of high efficiency, good spray quality, good control effect. The drug loadings were 1.8 t and 1.5 t, respectively. Spraying area of single shelves was 1 000 hm 2 and 667 hm 2, respectively. The maximum control area of each effective working day was 8 000 hm 2 and 5 333.6 hm 2. The average droplet density of AT-504 and AT-402B aircraft was 15-25 / cm2, the uniformity was 0.75-0.80, the median diameter of droplet was 176μm, the coverage of spraying was 96% and the control effect was 95% -99% . Using AT-504 and AT-402 to prevent and control American white moth in Shandong Province, the economic benefits, ecological benefits and social benefits are remarkable.